1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
kodGreya [7K]
2 years ago
8

Which of the following functions is a direct variation?

Mathematics
2 answers:
Nezavi [6.7K]2 years ago
7 0

Answer:

f(x)=2x

Step-by-step explanation:

we know that

A relationship between two variables, x, and y, represent a direct variation if it can be expressed in the form y/x=k or y=kx

In a direct variation the constant of proportionality k is equal to the slope of the line m and the line passes through the origin

therefore

in this problem

f(x)=2x -----> represent a direct variation

valentina_108 [34]2 years ago
4 0
When two variable quantities have a constant (unchanged) ratio, their relationship is called a direct variation. It is said that one variable "varies<span> directly" as the other...simply when the y-intercept is zero.

So the best answer is f(x)=2x</span>
You might be interested in
The sum of two numbers is 128. Their difference is 4. What are the numbers?
Naddik [55]

Answer:

66 and 62

Step-by-step explanation:

128 divided by 2 gives you 64, and by taking two away from one number and giving it to the other, you're final answers are 66 and 62

3 0
3 years ago
Read 2 more answers
Steve and Elizabeth decide to become partners in a children’s cooking school. They need $80,000 for the franchise. They invest i
PilotLPTM [1.2K]

Answer:

The share of Steve  is $34,285 .71

The share of Elizabeth  is  $45,714.28

Step-by-step explanation:

The total investment of Steve and Elizabeth in cooking school = $80, 000

The ratio of investment of  Steve and Elizabeth  = 3: 4

Let us assume the common factor in the ratio is m.

So, the ratio of  Steve = 3 m

and the ratio of  Steve = 4 m

So, according to the question:

⇒ 3 m + 4 m   =  80,000

or, 7 m = 80,000

⇒ m = 80,000 / 7 = 11,428.57

or, m = 11,428.57

⇒ The share of Steve = 3 m = 3 x (11,428.57)  = 34,285 .71

⇒ The share of Elizabeth = 4 m = 4 x (11,428.57)  = 45,714.28

4 0
3 years ago
If I have 87 points and I want to get to 700, how many more points do I need?
garri49 [273]
Subtract 87 from 700
700 - 87 = 613
You need 613 more points
4 0
3 years ago
Read 2 more answers
I need help ASAP please help! 10th grade algebra
Sholpan [36]
This is 10th grade I’m in regular 8th and can do this w no problem
5 0
2 years ago
Determine whether each sum, difference, product,
PIT_PIT [208]

Answer:

28. The difference represents an irrational number

29. The difference represents a rational number

30. The quotient represents a rational number

31. The quotient represents an irrational number

Step-by-step explanation:

* Lets explain how to solve the problem

- The rational number is any numbers can be put in the form of a/b,

  where a and b are integers b ≠ 0

- Ex: 1 , 2/3 , 5/4 , 22/7 , 100 , ................

- The irrational number is any number that is not rational

- It is a number that cannot be written as a ratio of two integers

 or cannot be expressed as a fraction

- Ex: √2 , √7 , π ,  ..... (π is irrational because it's approximated value)

- If the part of the the number is irrational, then the number

 is irrational

- Ex: (5 + √3) , (√7 + 5) , 2√5 , √11/4 , 5/√13

* Lets solve the problems

28. \frac{6}{23}-\frac{\sqrt{2}}{2}

∵ √2/2 is an irrational number

∵ One term is an irrational number

∴ The difference represents an irrational number

29. \frac{6}{23}-\frac{15}{127}

∵ The two terms are rational numbers

∴ The difference represents a rational number

30. \frac{6}{23} ÷ \frac{15}{127}

∵ The two terms are rational numbers

∴ The quotient represents a rational number

31. \frac{6}{23} ÷ \frac{\sqrt{2}}{2}

∵ √2/2 is an irrational number

∵ One term is an irrational number

∴ The quotient represents an irrational number

7 0
3 years ago
Other questions:
  • I need help with this please
    14·2 answers
  • Maggie bought trains for her model train set. She spent $99. Gage bought some trains too. He spent $66. Each train cost the same
    6·1 answer
  • The sum of two numbers is 44, and the larger number is 2 more than the smaller number. What is the smaller number?
    15·1 answer
  • Choose the best score on a quiz 15 points out of 25
    5·1 answer
  • 12x-y when x= 1/3, y=-2
    7·2 answers
  • I enter the mall with 75 dollars. I spend a dollars at American Eagle, which is $4 more than the amount I spent at Banana Republ
    15·1 answer
  • What is the class boundary between the first and second classes?
    9·1 answer
  • Please help lolllllllllllll
    13·1 answer
  • What is the surface area of the cylinder with height 5 mi and radius 6 mi? Round your answer to the nearest thousandth.
    6·2 answers
  • Evaluate 51x3 - 21 + 7 when x = -2.<br> DONE
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!